LXR uboot/include/tca642x.h

   1/*
   2 * Copyright 2013 Texas Instruments, Inc.
   3 * Author: Dan Murphy <dmurphy@ti.com>
   4 *
   5 * Derived work from the pca953x.c driver
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License as
   9 * published by the Free Software Foundation; either version 2 of
  10 * the License, or (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20 * MA 02111-1307 USA
  21 */
  22
  23#ifndef __TCA642X_H_
  24#define __TCA642X_H_
  25
  26#ifdef CONFIG_CMD_TCA642X
  27enum {
  28        TCA642X_CMD_INFO,
  29        TCA642X_CMD_DEVICE,
  30        TCA642X_CMD_OUTPUT,
  31        TCA642X_CMD_INPUT,
  32        TCA642X_CMD_INVERT,
  33};
  34#endif
  35
  36#define TCA642X_OUT_LOW         0
  37#define TCA642X_OUT_HIGH        1
  38#define TCA642X_POL_NORMAL      0
  39#define TCA642X_POL_INVERT      1
  40#define TCA642X_DIR_OUT         0
  41#define TCA642X_DIR_IN          1
  42
  43/* Default to an address that hopefully won't corrupt other i2c devices */
  44#ifndef CFG_SYS_I2C_TCA642X_ADDR
  45#define CFG_SYS_I2C_TCA642X_ADDR        (~0)
  46#endif
  47
  48/* Default to an address that hopefully won't corrupt other i2c devices */
  49#ifndef CFG_SYS_I2C_TCA642X_BUS_NUM
  50#define CFG_SYS_I2C_TCA642X_BUS_NUM     (0)
  51#endif
  52
  53struct tca642x_bank_info {
  54        uint8_t input_reg;
  55        uint8_t output_reg;
  56        uint8_t polarity_reg;
  57        uint8_t configuration_reg;
  58};
  59
  60int tca642x_set_val(uchar chip, uint8_t gpio_bank,
  61                        uint8_t reg_bit, uint8_t data);
  62int tca642x_set_pol(uchar chip, uint8_t gpio_bank,
  63                        uint8_t reg_bit, uint8_t data);
  64int tca642x_set_dir(uchar chip, uint8_t gpio_bank,
  65                        uint8_t reg_bit, uint8_t data);
  66int tca642x_get_val(uchar chip, uint8_t gpio_bank);
  67int tca642x_set_inital_state(uchar chip, struct tca642x_bank_info init_data[]);
  68
  69#endif /* __TCA642X_H_ */
  70